Liquid steel slag interface sampling device

Abstract

The application relates to a liquid steel slag interface sampling device and belongs to the technical field of molten steel detection. The device comprises a sampler main body in a tubular structure with open ends and used for collecting a molten steel sample, a balloon and a ball in the balloon, the balloon is connected with the side surface of the sampler main body, and the ball is fixed in the balloon through fusible material to realize entering the sampler main body and plugging the opening under a high-temperature environment. When the device is used for sampling, the fusible material in the balloon fails due to the high temperature of the molten steel, the ball quickly enters the inside of the sampler to plug the opening, the molten steel and the steel slag are simultaneously taken out under the molten state, and the taken-out sample can be further treated and analyzed. The device is simple in structure, can be mass-produced, is convenient to use, can quickly and simultaneously obtain the molten steel and the molten steel slag, and is convenient for subsequent analysis.

Description

Technical Field

[0001] This application relates to the field of steel preparation technology, and in particular to a liquid steel slag interface sampling device. Background Technology

[0002] In the steel smelting and casting process, multiple samplings of the molten steel-slag interface are required to monitor the smelting process. Since the reaction between molten steel and slag is dynamic, conventional sampling involves separately sampling and analyzing the molten steel and molten slag far from the slag surface, which cannot objectively reflect the reaction between steel and slag at a specific moment in time.

[0003] Therefore, there is a need to provide a sampling device that can simultaneously sample molten steel and slag to reflect the interfacial reaction. Utility Model Content

[0004] This application provides a liquid steel slag interface sampling device to solve the following technical problem: how to sample molten steel and steel slag simultaneously.

[0005] This application provides a liquid steel slag interface sampling device, including:

[0006] The main body of the sampler is made of tubular material with openings at both ends, used to collect molten steel and / or slag samples;

[0007] The balloon and the sphere inside it are connected to the side of the sampler body. The sphere is fixed inside the balloon by a fusible material so as to enter the sampler body and seal the opening under high temperature environment.

[0008] Optionally, the sampler body includes a sample retention area, a sealing area, and a bottom opening, with the side of the sealing area connected to the balloon.

[0009] Optionally, the inner diameter of the bottom opening is smaller than the inner diameter of the blocking area, and the inner diameter of the blocking area matches the diameter of the sphere.

[0010] Optionally, the inner diameter of the bottom opening is D, and the inner diameter of the blocking area is 1.1D, which is the same as the diameter of the sphere.

[0011] Optionally, the inner diameter of the balloon is greater than 1.1D.

[0012] Optionally, the inner diameter of the balloon is 1.2D.

[0013] Optionally, the sampler body adopts a tubular structure with openings at both ends.

[0014] Optionally, the sphere is fixed inside the balloon by a fusible material, specifically including: the sphere is fixed inside the balloon by a blocking wire or a blocking baffle.

[0015] Optionally, the sphere is a high-density sphere.

[0016] Optionally, the sphere is a lead ball.

[0017] The technical solutions provided in this application have the following advantages compared with the prior art:

[0018] This application provides a liquid steel slag interface sampling device, comprising: a sampler body made of a tubular material open at both ends for collecting molten steel and / or steel slag samples; a balloon and a sphere inside it, the balloon being connected to the side of the sampler body, and the sphere being fixed inside the balloon by a fusible material to allow it to enter the sampler body under high-temperature conditions and seal the openings. When the device performs sampling, due to the high temperature of the molten steel, the fusible material inside the balloon becomes ineffective after the sampling device enters the molten steel, and the sphere quickly enters the sampler to seal the openings, achieving simultaneous extraction of molten steel and steel slag under molten conditions. The extracted samples can then be further processed and analyzed.

[0019] This device has a simple structure, can be mass-produced, is easy to use, and can quickly and simultaneously obtain molten steel and molten steel slag, which facilitates subsequent analysis. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a liquid steel slag interface sampling device according to some embodiments of this application;

[0023] Figure 2 This is a schematic diagram of the structure of a liquid steel slag interface sampling device according to some embodiments of this application;

[0024] Figure 3 This is a schematic diagram showing the axial zoning of the collected liquid steel slag sample. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] Various embodiments of this application may exist in the form of a range; it should be understood that the description in the form of a range is merely for convenience and brevity and should not be construed as a hard limitation on the scope of this application; therefore, it should be considered that the range description has specifically disclosed all possible sub-ranges and single numerical values ​​within that range; for example, it should be considered that the range description from 1 to 6 has specifically disclosed sub-ranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and single numbers within the range such as 1, 2, 3, 4, 5, and 6, regardless of the range; in addition, whenever a numerical range is indicated herein, it means including any referenced number (fraction or integer) within the indicated range.

[0027] In this document, terms such as “comprising” mean “including but not limited to”. Relational terms such as “first” and “second” are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. “And / or” describes the relationship between related objects, indicating that there can be three relationships, for example, A and / or B can mean: A alone, A and B simultaneously, or B alone; where A and B can be singular or plural. “At least one” means one or more, “more” means two or more; “at least one,” “at least one of the following,” or similar expressions refer to any combination of these items, including any combination of single or plural items; for example, “at least one of a, b, or c,” or “at least one of a, b, and c,” can both mean: a, b, c, ab (i.e., a and b), ac, bc, or abc, where a, b, and c can be single or multiple. "Parts representation" such as parts by weight or parts by mass indicates the proportional relationship between components. In the proportional relationships discussed in this article, the parameters that need to be described by proportion should be understood as the first term of the proportion in the order of description, and the proportion figures should be understood as the second term of the proportion. For example, if the mass ratio of substance A, substance B, and substance C is 1:2:3, then substances A, B, and C should correspond one-to-one with the proportion figures in the proportion in the order of description, that is, the mass of substance A: the mass of substance B: the mass of substance C = 1:2:3.

[0028] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this article can be purchased from the market or prepared by existing methods.

[0029] Figure 1 This is a schematic diagram of the structure of a liquid steel slag interface sampling device according to some embodiments of this application;

[0030] like Figure 1 As shown in the figure, this application provides a liquid steel slag interface sampling device, including:

[0031] The main body of the sampler is made of tubular material with openings at both ends, used to collect molten steel and / or slag samples;

[0032] The balloon and the sphere inside it are connected to the side of the sampler body. The sphere is fixed inside the balloon by a fusible material so as to enter the sampler body and seal the opening under high temperature environment.

[0033] In the above embodiment, the sampler body constitutes the core structure of the sampling device and is typically designed in a tubular shape, such as a steel pipe, to facilitate insertion of the sampler body into molten steel to collect molten steel and / or slag samples. The balloon is connected to the sampler body; during sampling, the sphere inside is drawn into the sampler body due to the high temperature, sealing the opening and thus rapidly sealing the internal space of the sampler body. In this way, the molten steel and molten slag are simultaneously enclosed within the sampler body, completing the sampling process.

[0034] As an optional implementation, the sampler body sequentially includes a sample retention area, a sealing area, and a bottom opening, with the side of the sealing area connected to the balloon.

[0035] In the above embodiment, the sampler body is divided into three main areas: a sample retention area, a sealing area, and a bottom opening. The sample retention area, located at the top, is used to store molten steel and slag samples; the sealing area is located between the sample retention area and the bottom opening and is connected to the balloon, its function being to receive the balloon to seal the sampling space.

[0036] As an optional implementation, the inner diameters of the sample retention area and the bottom opening are both smaller than the inner diameter of the sealing area, and the inner diameter of the sealing area matches the diameter of the sphere.

[0037] In the above implementation, the inner diameter of the bottom opening is ensured to be smaller than the inner diameter of the sealing area so that the inner diameter of the sealing area matches the diameter of the sphere. The purpose is to allow the sphere to fall smoothly into and remain in the sealing area, thereby completely sealing the sampler body.

[0038] As an optional implementation, the inner diameter of the sample retention area and the inner diameter of the bottom opening are both smaller than the inner diameter of the sealing area, and the inner diameter of the sealing area matches the diameter of the sphere.

[0039] In the above embodiment, the inner diameter of the sampling area and the inner diameter of the bottom opening are both smaller than the inner diameter of the sealing area. This is to ensure that the sphere can be stably embedded in the sealing area. This prevents the sphere from shifting upwards during sampling due to swaying, thus avoiding any adverse effects on the sampling results.

[0040] As an optional implementation, the inner diameter of the sample retention area and the bottom opening is D, and the inner diameter of the sealing area and the diameter of the sphere are 1.1D.

[0041] In the above implementation, the inner diameter of the sealing area and the diameter of the sphere are controlled to be slightly larger than the inner diameter of the bottom opening. This is because the sphere needs to rely on gravity to achieve seamless sealing. It is necessary not only to ensure that the diameter of the sealing sphere is larger than the diameter of the hole being sealed, but also to consider the fit between the two and potential dimensional deviations during processing, while also taking into account the possibility of melting of the sealing sphere under high-temperature conditions.

[0042] As an optional implementation, the inner diameter of the balloon is greater than 1.1D.

[0043] In the above embodiments, the inner diameter of the balloon is controlled to be larger than the diameter of the sphere, the purpose of which is to enable the sphere to roll.

[0044] As an optional implementation, the inner diameter of the balloon is 1.2D.

[0045] In the above embodiment, the inner diameter of the control balloon is slightly larger than the diameter of the sphere, the purpose of which is to ensure that the sphere can only roll slightly under the influence of gravity. Once it encounters an obstructing force, such as a lead wire or a baffle, the sphere will be unable to continue moving.

[0046] As an optional implementation, the height of the blocking area is D, and the height of the bottom opening is 0.5D.

[0047] As an optional implementation, the value of D is 20mm to 40mm. This size is set according to the cross-sectional requirements of the test sample. For example, the value of D can be 20mm, 25mm, 30mm, 35mm, or 40mm.

[0048] As an optional implementation, the sampler body adopts a tubular structure with openings at both ends.

[0049] In the above embodiment, the sampler body adopts a tubular design with openings at both ends, ensuring balanced air pressure at the top and bottom during use, facilitating the flow of liquid steel slag and molten steel into the sampler body. After sampling, the bottom opening is sealed by a sphere, thus smoothly extracting the sample from the molten steel.

[0050] As an optional implementation, the length of the sampler body is 180mm to 220mm, which can be adjusted according to actual needs and the range of values ​​of D. For example, the length of the sampler body can be 180mm, 185mm, 190mm, 195mm, 200mm, 205mm, 210mm, 215mm or 220mm.

[0051] As an optional implementation, the sphere is fixed inside the balloon by a fusible material, specifically including: the sphere is fixed inside the balloon by a blocking wire or a blocking baffle.

[0052] In the above embodiments, the sphere is fixed inside the balloon by using blocking lead wire or blocking lead baffle. This is because lead has a low melting point, and the metal wire or baffle has a large contact area with the molten steel, which allows it to melt quickly and release the sphere to seal the sampler body.

[0053] As an optional implementation, the sphere is a high-density sphere.

[0054] In the above embodiment, the reason why the sphere is a high-density sphere is that the high-density sphere can naturally roll down to the lower part of the sampler body and sink to the bottom of the molten steel by its own weight.

[0055] As an alternative implementation, the sphere is a lead ball.

[0056] In the above embodiment, the sphere is a lead ball because lead balls have a high specific gravity.

[0057] The present application is further illustrated below with reference to specific embodiments. Experimental methods in the following embodiments that do not specify specific conditions are generally determined according to national / industry standards; if there is no corresponding national / industry standard, they are performed according to general international standards, conventional conditions, or conditions recommended by the manufacturer.

[0058] Example 1

[0059] This embodiment provides a liquid steel slag interface sampling device, such as... Figure 1 As shown, it includes:

[0060] The main body of the sampler is a 200mm long steel pipe with openings at both ends, used to collect molten steel and / or steel slag samples;

[0061] The sampler body includes, from top to bottom, a sample retention area, a sealing area, and a lower opening. The inner diameter of the sample retention area and the inner diameter of the lower opening are 30 mm, and the inner diameter of the sealing area is 33 mm.

[0062] The length of the sample retention area is 140mm.

[0063] The balloon and the sphere inside it are connected to the side of the sampler body. The sphere is fixed inside the balloon by a blocking wire to allow it to enter the sampler body and seal the opening under high temperature conditions.

[0064] The balloon also uses a steel tube structure with an inner diameter of 36mm; the inner diameter of the sphere is the same as the inner diameter of the occlusion area, which is 33mm.

[0065] Example 2

[0066] This embodiment provides a liquid steel slag interface sampling device, such as... Figure 2 As shown, it includes:

[0067] The main body of the sampler is a steel pipe with openings at both ends and a length of 220mm, used to collect molten steel and / or steel slag samples;

[0068] The sampler body includes, from top to bottom, a sample retention area, a sealing area, and a lower opening, with the inner diameter of the lower opening being 40 mm and the inner diameters of the sample retention area and the sealing area both being 44 mm.

[0069] The length of the sample retention area is 150mm.

[0070] The balloon and the sphere inside it are connected to the side of the sampler body. The sphere is fixed inside the balloon by a blocking wire to allow it to enter the sampler body and seal the opening under high temperature conditions.

[0071] The balloon also uses a steel tube structure with an inner diameter of 36mm; the inner diameter of the sphere is the same as the inner diameter of the occlusion area, which is 33mm.

[0072] How to use

[0073] When using the liquid steel slag interface sampling device provided in Example 1 for sampling, the method of use includes the following steps:

[0074] S1. Weld the liquid steel slag interface sampling device onto a steel rod or steel pipe, and then connect the sampling handle to sample the molten steel and steel slag.

[0075] S2. Insert the liquid steel slag interface sampling device into the steel slag. The insertion depth of the bottom of the sampler should be 150mm to 180mm. This insertion depth can be adjusted according to actual needs. The purpose is to ensure that the liquid steel level does not exceed the top of the sampler, while effectively obtaining samples of both liquid steel and liquid steel slag.

[0076] S3. Keep the sampling device in the liquid steel slag for 2 to 3 seconds. After the ball inside the balloon rolls down to the sealing area, quickly seal the sampling device and immediately remove it from the liquid steel slag. Then, perform water cooling treatment.

[0077] S4. Cut off the water-cooled sampling device, leaving only the sample in the retention area for further analysis.

[0078] Further analysis and processing of the samples can be performed as needed. One possible analytical processing method includes the following:

[0079] S41. The slag phase stripped from the sample in the retention area is subjected to inlay treatment for further mineral phase analysis;

[0080] S42. Cut the steel portion of the sample longitudinally and mark it into sections along the sample axis from near the slag surface, with each section divided into 20mm sections. Figure 3 As shown, the sample inclusions are automatically analyzed and scanned according to different regions.

[0081] S43. Determine the inclusions in the steel sample through thermodynamic calculations of the steel composition.

[0082] S44. Based on the mineral phase analysis results and the thermodynamic calculation results of inclusions, the inclusions automatically scanned in the steel sample are classified into endogenous inclusions, steel slag reaction-related inclusions and other inclusions, and the variation law of inclusions in each region is analyzed.

[0083] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed in this application.

Claims

1. A liquid steel slag interface sampling device, comprising: The main body of the sampler is made of tubular material with openings at both ends, used to collect molten steel and / or slag samples; The balloon and the sphere inside it are connected to the side of the sampler body. The sphere is fixed inside the balloon by a fusible material so as to enter the sampler body and seal the opening under high temperature environment.

2. The liquid steel slag interface sampling device according to claim 1, wherein the main body of the sampler sequentially includes a sampling area, a sealing area and a bottom opening, and the side of the sealing area is connected to the balloon.

3. In the liquid steel slag interface sampling device according to claim 2, the inner diameter of the bottom opening is smaller than the inner diameter of the sealing area, and the inner diameter of the sealing area matches the diameter of the sphere.

4. The liquid steel slag interface sampling device according to claim 3, wherein the inner diameter of the bottom opening is D, and the inner diameter of the blocking area is 1.1D compared to the diameter of the sphere.

5. The liquid steel slag interface sampling device according to claim 4, wherein the inner diameter of the balloon is greater than 1.1D.

6. The liquid steel slag interface sampling device according to claim 5, wherein the inner diameter of the balloon is 1.2D.

7. The liquid steel slag interface sampling device according to claim 1, wherein the main body of the sampler adopts a tubular structure with openings at both ends.

8. The liquid steel interface sampling device of claim 1, the ball secured within the balloon by a fusible material, comprising specifically: The sphere is fixed inside the balloon by a blocking wire or a blocking plate.

9. The liquid steel slag interface sampling device according to claim 1, wherein the sphere is a high-density sphere.

10. The liquid steel slag interface sampling device according to claim 9, wherein the sphere is a lead sphere.

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